BRUN, G. Logical Forms: Validity and Variety of Formalizations. Logic and Logical Philosophy, [S. l.], v. 32, n. 3, p. 341–361, 2023. DOI: 10.12775/LLP.2023.016. Disponível em: https://apcz.umk.pl/LLP/article/view/45075. Acesso em: 19 jul. 2024.